(19)
(11) EP 4 435 179 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
30.04.2025 Bulletin 2025/18

(43) Date of publication A2:
25.09.2024 Bulletin 2024/39

(21) Application number: 24187389.2

(22) Date of filing: 02.02.2022
(51) International Patent Classification (IPC): 
D21J 3/00(2006.01)
(52) Cooperative Patent Classification (CPC):
D21J 3/00
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 02.02.2021 EP 21154700

(62) Application number of the earlier application in accordance with Art. 76 EPC:
22154829.0 / 4036307

(71) Applicant: FibriTech sp. z o.o.
04-953 Warszawa (PL)

(72) Inventors:
  • Brzyski, Rafal
    05-077 Warszawa (PL)
  • Ziólkowski, Michal
    01-407 Warszawa (PL)
  • Szafranski, Mateusz
    95-045 Parzeczew (PL)
  • Holovin, Andrii
    03-285 Warszawa (PL)
  • Jezak, Monika
    26-610 Radom (PL)
  • Sosinski, Jakub
    05-085 Kampinos (PL)
  • Przybyszewski, Pawel
    04-479 Warszawa (PL)
  • Ciamulski, Tomasz
    04-953 Warszawa (PL)

(74) Representative: Eisenführ Speiser 
Patentanwälte Rechtsanwälte PartGmbB Gollierstraße 4
80339 München
80339 München (DE)

   


(54) APPARATUS AND METHOD FOR THE PREPARATION OF A THREE-DIMENSIONAL BIODEGRADABLE FIBRE NETWORK PRODUCT OF NATURAL ORGANIC FIBRES


(57) The invention relates to an apparatus and a method for the preparation of three-dimensional biodegradable fibre network product, wherein the apparatus performs the method comprising foaming natural organic fibres in aqueous solution, mould filling with the foamed natural organic fibres, wherein the mould has a plurality of pores, forming a three-dimensional biodegradable fibre network product by providing electromagnetic energy to the foamed natural organic fibres to control a pressure build-up internally within the mould, wherein the plurality of pores is adapted to evacuate liquid and steam generated by providing electromagnetic energy to the foamed natural organic fibres.
The invention also relates to a three-dimensional biodegradable fibre network product prepared by the inventive method and use of said product as a plant growth substrate, filtration medium, filling and/or acoustic and mechanical damping structure.







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